Ref.: Mining World, Vol. 19 (Dec, 1957): 65.
Farnham, L.L. & L.A. Stewart (1958), Manganese deposits of western Arizona, US Bureau of Mines Information Circular 7843: 79.
Keith, Stanton B. (1978) State of Arizona Bureau of Geology and Mineral Technology, Geological Survey Branch Bull. 192, Index of Mining Properties in Yuma County, Arizona: 180 (Table 4).
Arizona Bureau of Mines file data.
A manganese mine located in North-central sec. 2, T3S, R23W. Owned by N. & J.F. Powers, of Arizona.
Mineralization is pyrolusite with some manganite and psilomelane, mixed with calcite and quartz, in lenticular shoots, fracture fillings, and narrow seams cementing brecciated wall rock along an extensive and wide, brecciated zone at the fault contact between Mesozoic granitic schist and Tertiary andesitic volcanics.
Workings include an adit and shaft operations. This mine was worked from about 1953 through 1958, producing some 500 tons of 30-40% Mn ore.
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